Lock down USB-A ports before an unapproved device ever connects. Eaton U2BLOCK-A10-RD port blockers provide a physical barrier against flash drives, peripherals, and other USB devices that can introduce malware or remove sensitive data. Designed for environments where endpoint control matters, they help security teams enforce policy without changing system settings or relying on user behavior. Each blocker inserts with the matching security key and stays secured in the port until intentionally removed. That makes them well suited for desktops, public-facing systems, lab equipment, and regulated work areas where USB access must be tightly controlled. The red finish also makes blocked ports easy to identify during audits and walk-throughs. For organizations protecting classified, regulated, or operationally sensitive data, port-level control adds a low-friction layer of defense. It is a practical choice when you need a visible, physical safeguard that supports broader endpoint security policies and reduces the chance of unauthorized access at the USB interface.